package com.cbd.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

/**
 * @Description: Redis配置类
 * @author CBD
 */
@Configuration
@Slf4j
public class RedisConfig extends CachingConfigurerSupport {
    /**
     * redisTemplate配置
     * @param factory redis连接工厂
     * @return redisTemplate
     */
    @Bean
    @SuppressWarnings("all")
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
        RedisTemplate<String, Object> template = new RedisTemplate<String, Object>();
        template.setConnectionFactory(factory);
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
        // key采用String的序列化方式
        template.setKeySerializer(stringRedisSerializer);
        // hash的key也采用String的序列化方式
        template.setHashKeySerializer(stringRedisSerializer);
        // value序列化方式采用jackson
        template.setValueSerializer(jackson2JsonRedisSerializer);
        // hash的value序列化方式采用jackson
        template.setHashValueSerializer(jackson2JsonRedisSerializer);
        template.afterPropertiesSet();
        return template;
    }

    /**
     * 缓存管理器
     * @param connectionFactory redis连接工厂
     * @return 缓存管理器
     */
    @Bean
    public CacheManager cacheManager(RedisConnectionFactory connectionFactory) {
        RedisCacheManager redisCacheManager = RedisCacheManager.builder(connectionFactory).build();
        return redisCacheManager;
    }

    /**
     * 自定义缓存key自动生成规则
     * @return
     */
    @Override
    public KeyGenerator keyGenerator() {
        return (o, method, objects) -> {
            // 格式化缓存key字符串
            StringBuilder stringBuilder = new StringBuilder();
            // 追加类名
            stringBuilder.append(o.getClass().getName());
            // 追加方法名
            stringBuilder.append(method.getName());
            // 遍历参数并且追加
            for (Object obj :objects) {
                stringBuilder.append(obj.toString());
            }
            log.info("调用Redis缓存Key: " + stringBuilder.toString());
            return stringBuilder.toString();
        };
    }
}
